f miller



1940 N. F. MILLER STOVEPIPE AIR CONDITIONER Filed May 5, 1938 2 Sheets-Sheet l JIZ E Miller IN VEN TOR.

A TTORNEYS.

1940- N. F. MILLER STOVEPIPE AIR CONDITIONER Filed May 5, 1938 2 Sheets-Sheet 2 .MZ'MiZZer INVENTOR.

A TTORNEYS.

Patented Aug. 20, 1940 UNITED STATES ears 1 Ciaim.

This invention relates to heating drums designed for use in connection with stovepipes, the primary object of the invention being to provide means for increasing the heating capacity of a stove by directing a draft of air through the drum, which is heated by heat radiating from the Stovepipe.

An important object of the invention is to provide a device of. this character which will draw cold air from a point adjacent to the floor and direct the cold air into the path of travel of heat drawn into the cold air pipe where the cold air is heated, and distributed throughout the area of the room for heating purposes.

A still further object of the invention is the provision of a heating drum which may be cheap- 15 constructed, and one which may be readily and easily mounted on the usual stovepipe eliminating the necessity of removing the stovepipe to install the device.

With the foregoing and other objects in View, which will appear as the description proceeds, the invention resides in the details of construction hereinafter described and claimed, it being 5 understood that changes in theprecise embodiment of the invention herein described, may be made within the scope of what is claimed, without departing from the spirit of the invention.

Referring to the drawings:

Figure 1 is an elevational View of a heating drum constructed in accordance with the invention.

Figure 2 is a sectional View taken on line 2-2 of Figure 1.

Figure 3 is a sectional view taken on line 3--3 of Figure l.

Figure 4 is a sectional View taken on line d--4 of Figure 1.

Figure 5 is a sectional View taken on line 5--5 of Figure 1.

Figure 6 is a view illustrating the construction of the cooperating hooks of the sections of the device, before the sections are moved into contact with each other.

Referring to the drawings in detail, the reference character 5 designates a heating stove having the usual stovepipe S with which the heating drum, forming the essence of this invention is used.

The heating drum is indicated generally by the reference character 1 and includes a rec tangular body portion comprising the section 8 having side walls 9, the central portions of the free edges thereof being bent upon themselves and extended inwardly providing hooks l0.

' walls H are also formed on the section 8, the free edges of the ends walls ll, being curved to End conform to the shape of the usual stove-pipe, so that when the section 8 is positioned, a close fit will be provided between the section 8 and stovepipe.

Cooperating with the section 8, is section 52 5 which alsov includes side walls E3, the central portions of the free edges thereof being formed into hooks M cooperating with the hooks it in securing the sections 8 and i2 together in such a way that the sections may be readilyassem- 10 bled around a sto-vepipe. On connecting the sections 9 and 12, the hooks iii are positioned by sliding the hooks M under the hooks it), removably securing the sections together. The end walls 15 also have their edges curved to closely 15 fit around a stovepipe, and as shown these end walls extend beyond the free edges of the sections to engage the end walls ii of the section 8, providing a support for thesection it. Extending through the main section 52, is a pipe it 20 which is of a length to extend to a point in spaced relation with the floor surface, so that cold air will enterthe lower end of the pipe 565 and be carried upwardly therethrough.

The portion of the pipe which is housed 2 by the section i2 is cut away as at H, so that heat radiating from the stovepipe s will pass into the pipe 16 where the heat will be transmitted to the cold air passing upwardly through the pipe It, the hot air passing out through the upper 30 end of the pipe [6.

Screws 18 are extended through the sections of the drum and pass into openings of the pipes 6 and I6, securing the drum against vertical movement on the pipes. I 35 The upper end of the pipe 06 may be open to allow hot air to pass into the room, or a pipe section may be connected to the upper end of the pipe l6 and heat carried to an adjacent room.

I claim: 40 In a heating drurn a main drum section having an open side and adapted to be fitted around a stovepipe, a cold air pipe extending into the main section of the drum and having an elongated opening formed therein, the elongated opening 45 mcxomus F. MILLER. 

